Line A (Nord-Sud)
E893250
Line A (Nord-Sud) was a former privately operated Paris Métro line of the Nord-Sud Company that later became part of the modern network under a different line designation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line A (Nord-Sud) canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10885538 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Line A (Nord-Sud) Context triple: [Rue du Bac, formerLineName, Line A (Nord-Sud)]
-
A.
RER Line C
RER Line C is a major commuter rail line in the Paris RER network, running along the Seine and serving numerous suburbs and key destinations in the Île-de-France region.
-
B.
Paris Saint-Lazare – Versailles Rive Droite
Paris Saint-Lazare – Versailles Rive Droite is a suburban rail service in the Île-de-France region connecting central Paris to the Versailles Rive Droite station.
-
C.
RER line E
RER line E is a Paris regional express railway line connecting central Paris with eastern suburbs such as Gagny.
-
D.
RER B line
The RER B line is a major Paris regional express railway line that connects central Paris with key northern and southern suburbs, including Charles de Gaulle Airport.
-
E.
Paris Métro Line 1
Paris Métro Line 1 is the oldest and one of the busiest lines of the Paris Métro, running primarily east–west through central Paris and serving many of the city’s major landmarks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Line A (Nord-Sud) Target entity description: Line A (Nord-Sud) was a former privately operated Paris Métro line of the Nord-Sud Company that later became part of the modern network under a different line designation.
-
A.
RER Line C
RER Line C is a major commuter rail line in the Paris RER network, running along the Seine and serving numerous suburbs and key destinations in the Île-de-France region.
-
B.
Paris Saint-Lazare – Versailles Rive Droite
Paris Saint-Lazare – Versailles Rive Droite is a suburban rail service in the Île-de-France region connecting central Paris to the Versailles Rive Droite station.
-
C.
RER line E
RER line E is a Paris regional express railway line connecting central Paris with eastern suburbs such as Gagny.
-
D.
RER B line
The RER B line is a major Paris regional express railway line that connects central Paris with key northern and southern suburbs, including Charles de Gaulle Airport.
-
E.
Paris Métro Line 1
Paris Métro Line 1 is the oldest and one of the busiest lines of the Paris Métro, running primarily east–west through central Paris and serving many of the city’s major landmarks.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
former Paris Métro line
ⓘ
rapid transit line ⓘ |
| becamePartOf | Compagnie du chemin de fer métropolitain de Paris network NERFINISHED ⓘ |
| cityServed | Paris NERFINISHED ⓘ |
| country | France ⓘ |
| electrification | 750 V DC third rail ⓘ |
| fareSystem | Paris Métro fare system ⓘ |
| formerOperatorType | private company ⓘ |
| integration | integrated into the Paris Métro network ⓘ |
| laterDesignatedAs | Paris Métro Line 12 NERFINISHED ⓘ |
| locatedIn |
France
ⓘ
Paris ⓘ |
| network | Paris Métro NERFINISHED ⓘ |
| openedAs | Line A of the Nord-Sud Company NERFINISHED ⓘ |
| operatedBy |
Compagnie du chemin de fer électrique souterrain Nord-Sud de Paris
NERFINISHED
ⓘ
Nord-Sud Company NERFINISHED ⓘ |
| originalNetwork | Nord-Sud Company network NERFINISHED ⓘ |
| partOf | Paris Métro NERFINISHED ⓘ |
| publicTransitSystem | Paris Métro NERFINISHED ⓘ |
| regionServed | Île-de-France NERFINISHED ⓘ |
| serviceType | urban rail transit ⓘ |
| status | defunct ⓘ |
| successorLine | Paris Métro Line 12 NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
| transitType | underground railway ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Line A (Nord-Sud) Description of subject: Line A (Nord-Sud) was a former privately operated Paris Métro line of the Nord-Sud Company that later became part of the modern network under a different line designation.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Rue du Bac